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Finding the Fourth Proportional to 844.02, 1,164.78 and 657.45

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Solution

The fourth proportional to 844.02, 1,164.78 and 657.45 is: 907.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.02 : 1,164.78 = 657.45 : x
  2. Step 2: Convert to fraction form
    844.02/1,164.78 = 657.45/x
  3. Step 3: Cross multiply
    844.02x = 1,164.78 × 657.45
  4. Step 4: Simplify right side
    844.02x = 765,784.61
  5. Step 5: Solve for x
    x = 765,784.61/844.02
  6. Step 6: Final answer
    x = 907.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.